<template>
  <div class="editorWrapper">
    <div class="editor" ref="editor" :style="styles"></div>
    <chooseImgComp ref="chooseImgComp"></chooseImgComp>

    <el-dialog
      title="插入/编辑链接"
      :visible.sync="insertLink.show"
      custom-class="insertLinkDialogWrapper"
      :before-close="insertLinkCloseHandle"
      append-to-body
      :close-on-click-modal="false"
      :close-on-press-escape="false"
    >
      <div class="contentBox">
        <div class="item">
          <div class="left">网址：</div>
          <div class="right">
            <el-input
              maxlength="100"
              v-model="insertLink.url"
              placeholder="请输入网址"
            ></el-input>
          </div>
        </div>
        <div class="item">
          <div class="left">显示文字：</div>
          <div class="right">
            <el-input
              maxlength="100"
              v-model="insertLink.text"
              placeholder="请输入链接文字"
            ></el-input>
          </div>
        </div>
        <div class="item">
          <div class="left">标题：</div>
          <div class="right">
            <el-input
              maxlength="100"
              v-model="insertLink.title"
              placeholder="请输入鼠标悬浮时的提示文字"
            ></el-input>
          </div>
        </div>
        <div class="item">
          <div class="left">链接打开位置：</div>
          <div class="right">
            <el-select v-model="insertLink.target" placeholder="请选择">
              <el-option label="当前窗口打开" value="_self"></el-option>
              <el-option label="新窗口打开" value="_blank"></el-option>
            </el-select>
          </div>
        </div>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="insertLinkCloseHandle">取 消</el-button>
        <el-button type="primary" @click="insertLinkConfirmHandle"
          >保 存</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
import Quill from "quill";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import Bus from "@/utils/bus";
export default {
  name: "Editor",
  data() {
    return {
      Quill: null,
      currentValue: "",
      options: {
        theme: "snow",
        bounds: document.body,
        debug: "warn",
        modules: {
          // 工具栏配置
          toolbar: [
            ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
            ["blockquote", "code-block"], // 引用  代码块
            [{ list: "ordered" }, { list: "bullet" }], // 有序、无序列表
            [{ indent: "-1" }, { indent: "+1" }], // 缩进
            [{ size: ["small", false, "large", "huge"] }], // 字体大小
            [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
            [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
            [{ align: [] }], // 对齐方式
            ["clean"], // 清除文本格式
            ["link", "image", this.noVedio ? "" : "video"], // 链接、图片、视频
          ],
        },
        placeholder: "请输入内容",
        readOnly: this.readOnly,
      },
      insertLink: {
        show: false,
        url: "", //地址
        text: "", //显示文字
        title: "", //标题
        target: "_self", //链接打开方式
        range: {
          index: 0,
          length: 0,
        }
      },
    };
  },
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: "",
    },
    /* 高度 */
    height: {
      type: Number,
      default: null,
    },
    /* 最小高度 */
    minHeight: {
      type: Number,
      default: null,
    },
    /* 只读 */
    readOnly: {
      type: Boolean,
      default: false,
    },
    // 上传文件大小限制(MB)
    fileSize: {
      type: Number,
      default: 5,
    },
    /* 类型（base64格式、url格式） */
    type: {
      type: String,
      default: "url",
    },
    //不显示插入视频
    noVedio: {
      type: Boolean,
      default: false,
    },
  },
  components: {
    chooseImgComp: () =>
      import("../../pages/components/vlonChooseImage/Index.vue"),
  },
  mounted() {
    this.init();
    Bus.$on("chooseImgAfterToEditor", (params) => {
      this.handleUploadSuccess(params.url);
    });
  },
  methods: {
    init() {
      const editor = this.$refs.editor;
      this.Quill = new Quill(editor, this.options);
      // 如果设置了上传地址则自定义图片上传事件
      if (this.type == "url") {
        let toolbar = this.Quill.getModule("toolbar");
        //插入图片的事件
        toolbar.addHandler("image", (value) => {
          if (value) {
            //唤起选择图片的弹窗
            Bus.$emit("openChooseImgGroup", {
              ename: "quillEditorChooseImg",
            });
          } else {
            this.Quill.format("image", false);
          }
        });
        //插入链接
        toolbar.addHandler("link", (value) => {
          if (value) {
            const range = this.Quill.getSelection(focus = true);
            if (range) {
              if (range.length == 0) {
                //console.log('无选取，当前用户鼠标光标位置：', range.index);
              } else {
                const text = this.Quill.getText(range.index, range.length);
                //console.log("有选取，选取内容：", text);
                this.insertLink.text = text;
                this.insertLink.range.index = range.index;
                this.insertLink.range.length = range.length;
              }
            } else {
              //console.log("用户的鼠标光标不在编辑器内");
            }
            //唤起填写链接的弹窗
            this.insertLink.show = true;
          } else {
            this.Quill.format("link", false);
          }
        });
      }
      this.Quill.pasteHTML(this.currentValue);
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        const html = this.$refs.editor.children[0].innerHTML;
        const text = this.Quill.getText();
        const quill = this.Quill;
        this.currentValue = html;
        this.$emit("input", html);
        this.$emit("on-change", { html, text, quill });
      });
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
      });
      this.Quill.on("selection-change", (range, oldRange, source) => {
        this.$emit("on-selection-change", range, oldRange, source);
      });
      this.Quill.on("editor-change", (eventName, ...args) => {
        if (args[0] !== null) {
          const htmlData = editor.childNodes[0].innerHTML;
          this.$emit("on-editor-change", eventName, htmlData, ...args);
        }
      });
    },
    //选择完图片，插入到文本中
    handleUploadSuccess(url) {
      // 获取富文本组件实例
      let quill = this.Quill;
      // 如果上传成功
      if (url) {
        // 获取光标所在位置
        let length = quill.getSelection().index;
        // 插入图片  res.url为服务器返回的图片地址
        quill.insertEmbed(length, "image", url);
        // 调整光标到最后
        quill.setSelection(length + 1);
      } else {
        this.$message.error("图片插入失败");
      }
    },
    //关闭，插入链接的弹窗
    insertLinkCloseHandle() {
      this.insertLink.show = false;
    },
    //插入链接，点击保存的弹窗
    insertLinkConfirmHandle() {
      if (!this.insertLink.url) {
        this.$message.warning("请输入网址");
        return false;
      }
      if(this.insertLink.url.indexOf("http://")==-1 && this.insertLink.url.indexOf("https://")==-1) {
        this.$message.warning("网址输入错误");
        return false;
      }
      if (!this.insertLink.text) {
        this.$message.warning("请输入链接文字");
        return false;
      }
      // 获取富文本组件实例
      let quill = this.Quill;
      quill.format("link", {
        href: this.insertLink.url,
        text: this.insertLink.text,
        target: this.insertLink.target,
        title: this.insertLink.title
      }, 'api');  
      this.options.placeholder = "";
      this.Quill.options.placeholder = "";
      this.Quill.root["data-placeholder"] = "";
      this.insertLinkCloseHandle();

    },
  },
  computed: {
    styles() {
      let style = new Object();
      if (this.minHeight) {
        style.minHeight = `${this.minHeight}px`;
      }
      if (this.height) {
        style.height = `${this.height}px`;
      }
      return style;
    },
  },
  watch: {
    value: {
      handler(val) {
        if (val !== this.currentValue) {
          this.currentValue = val === null ? "" : val;
          if (this.Quill) {
            this.Quill.pasteHTML(this.currentValue);
          }
        }
      },
      immediate: true,
    },
  },
  beforeDestroy() {
    this.Quill = null;
  },
};
</script>

<style>
.editorWrapper .editor.ql-container {
  overflow-x: hidden;
  overflow-y: auto;
}
.editorWrapper .editor.ql-container .ql-editor {
  word-break: break-all;
  word-wrap: break-word;
}

.editor,
.ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
.insertLinkDialogWrapper{width:500px;}
.insertLinkDialogWrapper .contentBox {
  display: flex;
  flex-direction: column;
}
.insertLinkDialogWrapper .contentBox .item {
  display: flex;
  align-items: center;
  padding: 10px;
  box-sizing: border-box;
}
.insertLinkDialogWrapper .contentBox .item .left {
  width: 140px;
  display: flex;
  justify-content: flex-end;
  padding-right: 10px;
}
.insertLinkDialogWrapper .contentBox .item .right {
  display: flex;
  width: 100%;
}
</style>
